Pin Signal name Signal type Meaning
8 DD- B Bidirectional pair D-
Signal type: B = bidirectional
Note
The Ethernet interfaces have what is called autocrossing functionality, i.e. when required, send
and receive lines are switched over.
LED displays
For diagnostic purposes, the RJ45 sockets are each equipped with a green and an orange LED.
This allows the following status information about the respective Ethernet port to be displayed:
Table 7-11 LED displays of the Ethernet ports
Name Color Status Meaning
Link Green Lights up green Transfer rate 10 or 100 Mbit/s
Lights up orange Transfer rate 1000 Mbit/s
o No or faulty connection
Activity Orange lit Data exchange
o No data exchange
Position of the Ethernet interfaces
;3
31,(
;3
31,(1(7
;3
31,(23
Connecting
7.7 Use of Ethernet interfaces
NCU 7x0.3B PN
Equipment Manual, 10/2020, 6FC5397-1EP40-6BA1 59
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